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Post by emilyc on Apr 22, 2020 22:33:13 GMT -5
Was running a file tonight and randomly during the toolpath the z plunges significantly deeper. I was running a 1/4” EM at 100 IPM with a DOC of 0.125”. The rest of the file was fine. Switched bits to a 1/8” EM and had no issues. However went to run the house third tool path with the same 1/8” bit and it plunged significantly deeper than what was programmed then proceeded to run a line across the face of my workpiece. Anybody have any ideas?
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Post by gerry on Apr 22, 2020 23:32:52 GMT -5
Post your source file (Vcarve?). If it is too big to upload, then upload it to Google Drive, etc. and post a link.
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Post by Mezalick on Apr 23, 2020 1:03:13 GMT -5
If you are trying to cut a 3-D model you may have "holes" in the model where the bit is trying to cut.
As Gerry said, can you share the file or at least a screen shot of the area ?
Thanks
Michael
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Post by emilyc on Apr 23, 2020 6:05:49 GMT -5
Ok thanks for the responses. I'm using Vcarve Pro. I'm gonna try to post a link to google drive. I ran the toolpath labeled 46202k first and only had an issue when it got the section with the small fish attached to the lobster. The second toolpath was the 46200 and had no issues with it. However, I had left a section off and its the toolpath labeled turtle top. That's the second "glitch" I had. Please let me know if the link doesn't work. drive.google.com/open?id=1oi1N3sAT4F9sE6ICLhVZkYkGLStoYRsY |
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Post by gerry on Apr 23, 2020 12:09:56 GMT -5
The vectors look pretty good. Using Vector Validator you have a problem with 4 intersections on the top right of 46202K. No other duplicates, etc.
At this point, I would check for mechanical, static problems. When things take off in wild directions, plunges, etc. it could be static in your dust collector system, or a loose connection. Especially with such a simple cut as 'turtle top'. Try an 'air cut' (no bit) on 'turtle top' a few times with and without your dust collector running. If any error is not repeatable, then it's not the software (gcode).
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Post by Mezalick on Apr 23, 2020 12:29:54 GMT -5
Like Gerry, I'm thinking machine issue,,,,
Loosing steps ,,maybe..
Michael
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toddd
New Member
Posts: 62
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Post by toddd on Apr 23, 2020 16:02:05 GMT -5
What actual machine do you have? Is it recent.
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Post by emilyc on Apr 23, 2020 18:31:00 GMT -5
I have AR8 pro and just purchased in December. I tried another file today that I always run and the file started off fine. This time it ended up barely skimming the surface of the material. I’ll try it again without the dust collector running and see if there may be an issue with static.
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Post by gerry on Apr 23, 2020 18:58:58 GMT -5
Check that the couplers on the X, Y, and Z axis are tight. These connectors are tightened with a set screw. They could be loose and slipping. Do you do maintenance lubing on your machine? Lube the screws and rails with 3-in-one oil daily (oily rag), DO NOT USE WD-40 and lube the bearing fittings every 6 months with grease (oooppsss, not time yet)?
I keep my oily rag in an old cookie tin. I change it out when it starts looking grungy and replace it with a new shop rag, they're cheap.
Losing steps is the best bet..... loose connector.
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toddd
New Member
Posts: 62
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Post by toddd on Apr 23, 2020 22:43:20 GMT -5
I have AR8 pro and just purchased in December. I tried another file today that I always run and the file started off fine. This time it ended up barely skimming the surface of the material. I’ll try it again without the dust collector running and see if there may be an issue with static. Ok, reason I ask is I have same machine but the V5 model and having issues with similar symptoms. I am working with Chad@Axiom who is working on a solution, you might contact him he is very helpful. |
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Post by emilyc on Apr 24, 2020 6:38:18 GMT -5
I’ve checked all couplers and all are tight. I use the 3 in 1 oil daily on all ball screws and rails. I’m at a loss right now. I’ve reached out to support so hopefully they will have a solution.
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Post by newbeecnc on May 27, 2020 10:14:39 GMT -5
Were you able to solve the issue?
I have a similar issue with my Z axis.
I ran a program with Vcarve and halfway thru the program all of the sudden Z0 dropped by 10mm and continued from there (destroying the piece obviously).
Ran a completely different program and the same happened again. Halfway thru the program Z0 changed and the cutter plunged into the piece.
Programs are really short and they graphed out normal in Vcarve.
Anybody seen anything like that before?
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toddd
New Member
Posts: 62
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Post by toddd on May 27, 2020 14:30:15 GMT -5
My particular issue was not only the z axis and it requires some new hardware to achieve a fix, parts are in the mail to me so we’ll see when they arrive.
This is in a new v5 ar8 pro,
Since every scenario can be different its best to phone support and let them walk you through the steps to diagnose the issue. They are quite knowledgable on their machines.
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Post by mnwoodbee on May 28, 2020 9:27:18 GMT -5
I had similar issue with a different brand. I also had it turn out to be the bit was being pulled out slowly changing the z height another time. Just a thought.
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Post by engineerjim on May 29, 2020 18:39:07 GMT -5
Z-axis loses position and plunges into/thru work, breaks bits, stops spindle, burns wood, not pretty. 3 month old I2R-6 machine having this problem for the last two months. Intermittent problem but has gotten so bad I can't use the machine any more. Support seems to be stumped. I have replaced the connection board on the gantry and the Z-axis ball screw assembly. Not related to software, tool path, feed rate, pass depth, bit slip, coupling tightness, or stepper torque.
Also, early on, I found that the X and Y axes also lose position DURING a series of tool paths. This happens most of the time and is of the order of 0.5 to 2 mm in X and/or Y. Axiom's response to this downplayed the issue, but it is not insignificant. I was doing 2-sided work and the shift in the origin caused one side to shift that much relative to the other side. Not my idea of CNC. I started re-zeroing between sides and this worked only some of the time.
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Post by CNCMusicFactory on Jun 8, 2023 11:45:26 GMT -5
Hi all. I'm relatively new to machining. I'm working with an Axiom Elite 8. When setting the Z with the puck, the tool never cuts as deep as the tool path is set. I have even set the tool paths to cut 1/8" into a sacrificial board below the parts I'm cutting; and the tool still does not cut through the bottom of the part.
Everything is working fine when I set the Z manually. But I'd prefer the rapid work flow of using the puck. Am I missing anything obvious? Thanks in advance.
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Post by grossmsj on Jun 8, 2023 17:12:46 GMT -5
How much are you off by CNCMusicFactory?
If you set the Z0 with the puck and then lower the bit to a Z Height of 0, is it just on the material surface or significantly above it?
The height of each puck will be a little different, so you need to very accurately measure the height of your specific puck and put that value into your RichAuto controller. That would be the 'something obvious'. It could be something else of course, but this is a likely place to start.
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Post by CNCMusicFactory on Jun 19, 2023 12:39:43 GMT -5
How much are you off by CNCMusicFactory? If you set the Z0 with the puck and then lower the bit to a Z Height of 0, is it just on the material surface or significantly above it? The height of each puck will be a little different, so you need to very accurately measure the height of your specific puck and put that value into your RichAuto controller. That would be the 'something obvious'. It could be something else of course, but this is a likely place to start.
Thanks for the insight. I'll look into that.
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